Ekspolatacja i Niezawodnosc - Maintenance and Reliability最新文献

{"title":"Analysis of the impact of forging and trimming tools wear on the dimension-shape precision of forgings obtained in the process of manufacturing components for the automotive industry","authors":"M. Hawryluk, Piotr Kondracki, J. Krawczyk, Marcin Rychlik, J. Ziemba","doi":"10.17531/EIN.2019.3.14","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.14","url":null,"abstract":"Die forging is a competitive method of producing construction elements, such as pistons, crankshafts, gear wheels and gears used in the automotive and aircraft industries, in respect of other production technologies. The reason for this is that the items produced by this technology are characterized by good mechanical properties as well as dimensional and shape precision with a reduced amount of material waste and total cost of production. Additionally, the obtained material structure predisposes them to be used for responsible machine parts working under difficult operation conditions. However, the forging of such type of components is usually performed by means of a HAWRYLUK M, KONDRACKI P, KRAWCZYK J, RYCHLIK M, ZIEMBA J. Analysis of the impact of forging and trimming tools wear on the dimension-shape precision of forgings obtained in the process of manufacturing components for the automotive industry. Eksploatacja i Niezawodnosc – Maintenance and Reliability 2019; 21 (3): 476–484, http://dx.doi.org/10.17531/ein.2019.3.14.","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134356898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliability model of sequence motions and its solving idea","authors":"Yao Sun, Zhili Sun, Mingang Yin, Jie Zhou","doi":"10.17531/EIN.2019.3.1","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.1","url":null,"abstract":"Mechanical structural reliability has been studied since the 1960s and gradually applied in engineering machinery, aerospace, electrical equipment, and other fields [1, 5, 8, 13, 18, 20]. However, with the development of machinery to high precision and automation, the precision of mechanism motion has gradually become the main index for reliability evaluation [9, 10]. In the 1980s, mechanism motion precision started to be analyzed comprehensively from the perspective of probability statistics. Sandler [17] analyzed the kinematic and dynamic precision of simple mechanisms with a nonlinear method. Rhyu and Kwak [16] studied the optimization design of the planar four-bar linkages based on reliability. By the 1990s, progress had been made in applications of mechanism motion reliability. Misawa [12] proposed a research method for predicting the reliability of a deployable satellite antenna based on conventional reliability analysis. Then by the turn of this century, the reliability analysis of mechanism motion became increasingly based on simulation methods with the rapid development of computer technology. Rao and Bhatti [15] systematically established a probabilistic model of a simple manipulator based on Gaussian distribution and a Markov stochastic process. Kim et al. [11] calculated the reliability of an open-loop mechanism considering machining error and hinge clearance based on AFOSM (Advanced first order second moment) method and Monte-Carlo simulation. Asri et al. [2] analyzed the fatigue reliability of a wheel steering mechanism with a Monte-Carlo simulation method. Moreover, the reliability yao Sun Zhili Sun Mingang yin Jie Zhou","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122505291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliability analysis of complex uncertainty multi-state system based on Bayesian network","authors":"Haipeng Wang, F. Duan, Jun Ma","doi":"10.17531/EIN.2019.3.8","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.8","url":null,"abstract":"In modern engineering, multi-state system (MSS) is a kind of system that represents a capability allowing for more than two performance states in a system besides perfect functionality and complete fault [21]. Compared with the two-state system, MSS can define the components states of a system, and express the effect of the changes of component performance on system performance more flexibly and precisely. In the 1970s, Barlow and Wu [2] first proposed the concept of MSS and gradually established the related theory. Then, the reliability theory of MSS has been widely concerned by scholars. And the following reliability analysis methods for MSS have been developed: the extended Boolean model method [22, 26], random process theory [1, 14, 18], Monte-Carlo simulation method [23, 25], function model method [8, 16, 31], Bayesian network method [13, 29], and so on. The uncertainty, which is caused by the insufficient information about internal structures, the scarcity of historical data and the changeability of operation environment, is one of the most crucial problems in MSS reliability analysis. Therefore, it is very difficult to define and obtain the component state performances and state probabilities. Meantime, the boundaries among component fault states fail to define and obtain with precision. So the traditional probability-based method is no longer applicable. However, non-probabilistic methods, such as evidence theory [7], grey system theory [33], probability-box [27], and fuzzy theory [15, 30], have been proposed and developed for reliability analysis of complex uncertainty MSS. WANG H, DUAN F, MA J. Reliability analysis of complex uncertainty multi-state system based on Bayesian network. Eksploatacja i Niezawodnosc – Maintenance and Reliability 2019; 21 (3): 419–429, http://dx.doi.org/10.17531/ein.2019.3.8.","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"41 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115843921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methodology of overall equipment effectiveness calculation in the context of Industry 4.0 environment","authors":"Z. Aleš, J. Pavlů, V. Legát, F. Mošna, V. Jurča","doi":"10.17531/EIN.2019.3.7","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.7","url":null,"abstract":"","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115887353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A system reliability-based design optimization for the scraper chain of scraper conveyors with dependent failure modes","authors":"Li Shuai, Zhu Zhencai, Lu Hao, Shen Gang","doi":"10.17531/EIN.2019.3.5","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.5","url":null,"abstract":"In the current coal mining face, the scraper conveyor (Fig. 1) as one of the key equipments for large-scale, high-efficiency and continuous coal mining equipment not only bears the role of coal transportation, but also the running track of the shearer and the shifting point of the hydraulic support [24]. Therefore, the scraper conveyor is throughout the fully mechanized mining face and occupies an extremely important position. As shown in Fig. 1, the scraper conveyor consists of one control cabinet, one double-chain drive system, two double-drive sprockets, one to three drive units and lots of middle troughs. With the development of high-yield and high-efficiency coal mining face, it is urgent to develop large-capacity, long-distance, high-power, high-reliability scraper conveyors [9]. The intent of the reliability-based optimal design is less maintenance or maintenancefree, resulting in objective economic benefits. The scraper chain (Fig. 2) is the core component of the scraper conveyor; its quality and performance directly affect the working efficiency of scraper conveyors. Due to the complexity and the harshness of the working condition, the scraper chain is prone to serious accidents. The coal production performance can be specifically attributed to the reliability of scraper chains. Therefore, it is considered necessary to introduce the structural reliability models throughout the design process to provide a more accurate reliability assessment and parameter optimization for the scraper chain with multiple failure modes. Random variables such as tensile force, structural dimensions and material properties of the scraper chain may affect its reliability. What’s more, in order to meet reliability requirements of the scraper chain, the random variables that have a significant impact on device SHUAI L, ZHENCAI Z, HAO L, GANG S. A system reliability-based design optimization for the scraper chain of scraper conveyors with dependent failure modes. Eksploatacja i Niezawodnosc – Maintenance and Reliability 2019; 21 (3): 392–402, http://dx.doi.org/10.17531/ ein.2019.3.5.","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114075982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The assessment of acoustic effects of exploited road vehicles with the use of subjective features of sound","authors":"W. Paszkowski","doi":"10.17531/EIN.2019.3.19","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.19","url":null,"abstract":"The article proposed an original way to assess the acoustic effects of road vehicles in the environment, with the use of selected methods of sound modeling and simulation. The taken solution presents a way of estimating the acoustic emission to the environment, from the exploited road vehicles, using subjective sound features. In ongoing studies, it is assumed to analyze and evaluate the sound features in the following order: source propagation way receiver. The distribution of these features in the time and frequency domains depends on generation, propagation and immission of acoustic energy, by the partial sources of the vehicle. The obtained information in the form of an acoustic signal can be represented by physical and subjective features of the sound. The undertaken research include the use of subjective features of sound in the assessment of acoustic effects of road vehicles exploited in the environment. The developed method was verified using modeling and simulation methods based on recorded acoustic signals in an urbanized environment.","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125646278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of a supply chain configuration model to assess the reliability of logistics processes","authors":"M. Wasiak, I. Jacyna-Gołda, K. Markowska, R. Jachimowski, M. Kłodawski, M. Izdebski","doi":"10.17531/EIN.2019.3.2","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.2","url":null,"abstract":"The supply chain is generally understood as a group of companies such as mining, production or distribution companies, etc., which carry out joint activities necessary to satisfy the demand of final recipients for specific products. The coordination of activities is carried out throughout the whole chain of goods flow from the acquisition of raw materials to deliveries to the final recipient. These activities may include: development, production, sale, maintenance, procurement, distribution, resource management, support activities, etc. The role and location of individual companies – entities in the structure of the supply chain – results from the division of labour at subsequent stages of production and sale of products. Intersecting supply chains constitute a network of relations of interdependent organisations which, acting on the basis of mutual cooperation, jointly manage the material goods flows and information from suppliers to final customers, control and improve them [1, 4, 17, 21, 22, 23, 24, 36, 21]. It may therefore be said that entities operating in the supply chain through links with suppliers and recipients are involved in various processes and activities that create value in the form of products and services delivered to final consumers. Each of the companies integrated in the supply chain is responsible for a part of the realized flows between entities. There are many unpredictable situations in material goods flows which have a negative impact on the continuity and quality of these flows. The main operational risks1 in this respect from the point of view of an established cell of the supply chain result from the following adverse events: delivery delay, e.g. due to: organisational disruptions at the sup – plier, lack of availability of ordered materials at the supplier, late delivery of the means of transport for loading, wrong selection of transport route, road conditions, delivery errors, extended customs clearance,","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122074074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Driver reliability and behavior study based on a car simulator station tests in ACC system scenarios","authors":"M. Papis, Dominik Jastrzebski, Antoni Kopyt, M. Matyjewski, M. Miroslaw","doi":"10.17531/EIN.2019.3.18","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.18","url":null,"abstract":"Research on human safety is a complex, time consuming, and extremely important process. Especially in the car industry which is a huge market. Such research contains both crashworthiness of a vehicle structure, biomechanical study and research on driver behavior and his/her reactions. It may be tested either by means of computer simulations or real crash experiments. Simulations are time consuming but provide recurrent test. Unfortunately, they need a validation in a form of an experiment [33], which could be expensive. Moreover, sometimes it is impossible to make a recurrent experiment and there is a considerable risk of failure, i.e. in crash tests it may reach 13% [27]. In research on a driver behavior and reaction, both questionnaire studies and simulators can be distinguished. Questionnaire research covers many issues and often relates to the simulator one, i.e.: user knowledge about ADAS [29], in-depth exploration of perceptions towards automated vehicles [4], evaluation of the HMI intuitiveness [8]. Simulator research is being used from 60’s of XX century, when development of car simulators in UCLA [32], GM Styling Staff [3], Table 3. Steady state availability versus for Case 2","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129319499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Competence allocation planning robust to unexpected staff absenteeism","authors":"E. Szwarc, G. Bocewicz, Z. Banaszak, J. Wikarek","doi":"10.17531/EIN.2019.3.10","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.10","url":null,"abstract":"The object of planning man-power needs (labor demand), as part of employment planning, is to define the competence profiles of the personnel and other individuals employed in a company. In particular, this involves defining the requirements regarding employees’ knowledge, skills, abilities and behavior, determining the number of workers needed for various positions, and the scope of work that employees in each position have to perform. The quality of employment plans obtained in this process depends on the robustness of the production process to disruptions caused by unexpected events such as employee absences, machine failures, accidents at work, etc. To deal with these uncertainties, organizations must either hire a properly prepared staff of competent workers (with a certain redundancy of competences), or introduce on-line changes to the existing task schedule that will mitigate the effects of the disruptions. In this study, we consider the first of the above-mentioned measures, in which, by anticipating possible disruptions, an organization builds a staff of employees with specific competences, robust to a selected set of disruptions. It should be noted that planning decisions regarding the allocation of production tasks (which require specific employee competences) to resources (employees with given competences) are made in dynamically changing organizational settings [7], which involve frequent changes in the scope and structure of objectives, tasks and resources. Examples of such changes include employee absenteeism (sick leaves, accidents, maternity leaves, etc.), changes in the number of jobs, staff mobility (frequent employment changes), etc. Most of them are random and cannot be anticipated well in advance. Such events are henceforth referred to as disruptions [6, 20]. If a disruption caused by an employee’s absence results in a so-called competence gap, it is usually too late to bridge the gap by introducing appropriate changes (training, employment, outsourcing, etc.). While the existing literature describes Eryk SzwArc Grzegorz BocEwicz zbigniew BAnASzAk Jarosław wikArEk","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123759193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Remaining useful life prediction model of the space station","authors":"Lin Xiaopeng, Hongzhong Huang, Fuqiu Li, Liming Ren","doi":"10.17531/EIN.2019.3.17","DOIUrl":"https://doi.org/10.17531/EIN.2019.3.17","url":null,"abstract":"","PeriodicalId":309533,"journal":{"name":"Ekspolatacja i Niezawodnosc - Maintenance and Reliability","volume":"73 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124118880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}